The article presents the recent achievements of RN-BashNIPIneft LLC Institute in the development and application of X-ray scattering techniques to solve practical problems related to the determination of metal of oilfield equipment to corrosion damage, flowing under load. To solve these problems, the authors propose to adapt X-ray scattering techniques to the study of steels widely used to manufacture various products for the oil industry. In particular, the technique of X-ray phase analysis has been adapted to determine the type of structural components of steels (austenite, martensite, tempered martensite, bainite, perlite, ferrite) and assess their quantitative ratio in products. As a result, it became possible to establish possible violations of the heat treatment regimes of metal during the formation of a specific structure in steel blanks for the manufacture of oilfield equipment. By analyzing the crystallographic textures of the metal of the product, the predominant grain orientations of various structural components of steels were established, which enabled to identify various types of deformation treatment used in the molding of the final product. It is demonstrated that the analysis of the preferential orientations of steel grains provides important assistance in determining the anisotropy of the strength properties of the metal of oilfield equipment. This information allows one to evaluate the resulting strength in products of complex shape and can be useful in their design.
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